A study commissioned by CCIA Europe, representing major tech companies, estimates the EU's proposed Cloud and AI Development Act could cost 115 billion euros over ten years. This figure significantly exceeds the European Commission's upper estimate. A substantial portion of these projected costs, around 80 billion euros, stems from a scenario where sovereignty rules apply to 25% of cloud workloads in essential private industries. The report specifically criticizes Article 31, which could extend these sovereignty requirements beyond public services. CCIA argues that mandating shifts away from current cloud infrastructure would necessitate costly software redevelopment, accounting for nearly 70 percent of the estimated expenses. Luxembourg is projected to bear the largest per-worker cost, followed by Denmark, Austria, Finland, and Ireland. CCIA is advocating for a revised law that limits sovereignty restrictions to sensitive workloads and prioritizes risk-based technical safeguards. They contend that the Commission's estimates are incomplete and fail to capture the full financial impact on taxpayers and businesses. For companies like AWS and Google, offering data control options can also be a business strategy to retain European customers. This situation highlights a dynamic where tech giants support data sovereignty for customers while their industry association cautions governments against stringent requirements.